I’m sure I won’t surprise you when I say:

Indoor air quality is very important to your health and well-being.

You might also know that breathing clean and pure air has become a difficult mission – smog, exhaust, pollen, and dust are polluting our homes.

Well, the good news is it doesn’t have to be this way! Air purifiers can help you deal with these pollutants.

But finding the right one is not an easy job, right?

What Is the Best Air Purifier for 2018?

There are many things to consider when it comes to finding a suitable air cleaner.

Remember this:

A single product that’s right for everyone doesn’t exist. Your personal needs, the size of your home, and your budget will determine which air purifier is the best for you. Before taking a closer look at our reviews, I recommend you read our Buying Guide.

Below is our summary table with the best air purifiers for 2018.

ProductCADR
Room Size (sq ft)
 
Coway Mighty (Editor's choice)Dust - 246 / Pollen - 240 / Smoke - 233240Learn More
GermGuardian AC4825 (Bestseller)Smoke - 100+ (Estimated)100Learn More
Levoit LV-H132 (New!)Smoke - 11085-110Learn More
PureZone 3-in-1 (New!)Smoke - 8080-100Learn More
Winix 5500-2Dust - 243 / Pollen - 246 / Smoke - 232240Learn More
Alen BreatheSmartSmoke 270 - 300 (estimated)270-300Learn More
Honeywell HPA-300Dust - 320 / Pollen - 300 / Smoke 300300Learn More
Winix WAC9500Dust - 182 / Pollen - 194 / Smoke 183180Learn More
Whirlpool WhispureDust - 325 / Pollen - 401 / Smoke 315340Learn More
Biota Bot MM208 (New!)Smoke - 210 (estimated)210Learn More
Honeywell 50250-SDust - 250 / Pollen - 250 / Smoke 250250Learn More
ProductCADR
Room Size (sq ft)
Learn More
Coway Mighty (Best for 2018!)Dust - 246 / Pollen - 240 / Smoke 233240
GermGuardian AC4825 (Bestseller!)Smoke - 100+ (Estimated)

100
Levoit LV-H132Smoke - 110
85-110
PureZone 3-in-1 (New!)Smoke - 8080-100
Winix 5500-2Dust - 243 / Pollen - 246 / Smoke 232240
Alen BreatheSmartSmoke 270 - 300 (estimated)270-300
Honeywell HPA-300Dust - 320 / Pollen - 300 / Smoke 300300
Winix WAC9500Dust - 182 / Pollen - 194 / Smoke 183180
Whirlpool WhispureDust - 325 / Pollen - 401 / Smoke 315340
Biota Bot MM208 (New!)Smoke - 210 (estimated)210
Honeywell 50250-SDust - 250 / Pollen - 250 / Smoke 250250

1. Coway AP-1512HH Mighty – Best Performing Air Purifier

First on our list of Best Air Purifiers 2018 is the Coway AP-1512HH Mighty.

This cleaner was tested and voted the best performing air purifier two times in a row (2014 and 2016)!

Highlights

  • Very powerful
  • Low operating costs
  • Best for removing allergens

Technology and Filters

With the Coway purifier, you get a powerful 4-stage cleaning system:

  • Pre-filter to capture larger particles
  • Carbon filters eliminate odors and gases
  • True HEPA filtration to remove tiny allergens
  • Vital Ion technology to kill airborne bacteria and viruses

Although air ionizers are known to produce a lung irritant called ozone, the Coway Mighty has been certified by the California Environmental Protection Agency’s Air Resources Board (ARB) as producing ozone in extremely low or non-existent quantities.

That said,

It’s still best to be cautious, so if you are a sensitive user, you should turn the ionizer off when spending time close to the unit.

The Coway Mighty is not the best when it comes to its odor-controlling abilities. It does eliminate cigarette and household smells from the air, but if getting rid of bad smells is your main concern, the Mighty might not be the best choice for you.

Unit Size

The Mighty Air has a compact design, and it only weighs a little over 12 pounds. It is thus very easy to move it from room to room if you need to.

Its beautiful and modern design is one of the things I like most about the Mighty:

It blends into the background perfectly, both visually and aurally.

If you are looking for a cleaner for your bedroom, then Coway is a perfect choice – it runs extremely quiet, especially on the LOW setting!

Capacity and Area Covered

According to the manual, the device is CADR rated 240 and can be used in larger rooms up to 361 square feet. As recommended in our Buying Guide and based on its capacity, the Mighty performs best if your living room is up to 240 sq ft in size.

Filter Change

The Coway air purifier officially requires a filter change every 6 to 12 months, but if you don’t run it 24/7, you might be able to extend the filter life. Even if you change the filters twice a year, it is still one of the cheapest units to operate!

Overall, the Coway AP-1512HH Mighty is the best performing home air purifier on the market today:

Sensibly priced and one of the cheapest machines to maintain long-term, its performance tops others costing two or even three times as much.

Additional features

  • Air quality indicator
  • Auto mode to adjust the speed based on air quality
  • Eco mode to automatically switch off if it doesn’t detect any pollution in 30 minutes
  • 3-year limited warranty

WE LIKE

Best for dust and pollen allergies
Powerful 4-stage cleaning system
Quiet
Low operating costs
Energy Star Certified

We don’t like

Use of ionizer (can be switched off)
Not the best for removing odors and smoke

Alternatives to the Coway Mighty

Rabbit Air MinusA2 Ultra Quiet HEPA Air Purifier

2. GermGuardian AC4825 – Best-Selling Air Cleaner

The GermGuardian AC4825 is next on our list.

It is the number one best seller online and is highly rated by thousands of users!

Highlights

  • Affordable
  • Quiet
  • Works best in small spaces

Technology and Filters

The GermGuardian comes with a 3-in-1 air cleaning system:

  • A pre-filter with activated carbon captures large particles and reduces cooking smells, tobacco smoke, and odors from pets.
  • A real HEPA filter captures airborne allergens like dust mites, mold spores, plant pollens and dander.
  • UV-C light kills airborne bacteria and viruses. It also activates a chemical which further eliminates odors caused by cooking, pets, and smoking.

The use of UV-C light is a place for concern with this GermGuardian air purifier. Ultraviolet-C lamps are known to produce ozone, which is harmful in large doses.

Although this particular model uses a higher wavelength and is not supposed to emit any ozone, don’t use it in rooms where babies, the elderly or people who are sensitive to lung irritants spend the majority of their time.

Unit Size

This affordable unit has a beautiful modern design, and it only weighs 7 pounds. If you need to move it around your home, it is easily portable.

The ultra-quiet operating system means GermGuardian can be kept running all night and even used in your bedroom or office.

Capacity and Area Covered

According to the manual, the GermGuardian AC4825 is ideal for use in medium-size rooms up to 155 square feet and CADR is estimated at 100+.

Our recommendation is to use it for small spaces around 100-125 sq ft in size to get the most out of it.

Filter Change

GermGuardian has two parts that need to be replaced from time to time:

The UV-C bulb needs to be replaced about every 10-12 months, depending on use.

You need to change the 3-in-1 HEPA filter every 6-8 months. If you want to lengthen the life of the HEPA filter, you can also purchase a separate pack of carbon layered filters which will last you for about a year.

Additional costs for the GermGuardian purifier are somewhere between $80-$90 dollars a year.

In summary, the AC4825 is one of the highest recommended units by users at the moment: The efficient 3-in-1 cleaning system filters out allergens from the air, eliminates, odors and cleans the air by killing airborne bacteria and viruses. It’s got a beautiful design, it’s easy to use and maintain, it’s very quiet, AND affordable at the same time.

Additional features

  • Filter and UV-C bulb replacement reminders
  • 3-year limited warranty

WE LIKE

Best for dust and pollen allergies
Highly recommended by other users
Small, light and easily portable
Energy Star Certified
Quiet

WE DON’T LIKE

Use of UV-C light (can be switched off)
Covers only very small rooms
Not very powerful
High operating costs

3. Levoit LV-H132 – Best Budget Air Purifier

The 3-stage Levoit LV-H132 is #3 in our list as the best budget air purifier.

It is perfect for use in small rooms and gets rid of dust and bad odors instantly!

Highlights

  • Great price
  • Very effective for removing bad odors
  • Works best in very small rooms

Technology and Filters

This rather small and cheap air cleanser uses a powerful 3-stage air filtration system:

  • A Fine Preliminary filter captures even smaller particles and helps neutralize pet dander, mold, and airborne bacteria.
  • A HEPA filter traps pollen, dust mites, pet dander, and other allergens.
  • An activated charcoal filter is very efficient in neutralizing household smells like tobacco smoke, pet odors, and cooking smells.

The Levoit is one of the few air cleansers available that doesn’t use an ionizer, so this is a great unit for people who are concerned about the potential health risks of this technology!

Unit Size

Another great thing about Levoit is its size and weight. It’s perfect for use on tabletops as it’s only a little over 14 inches high. It’s also easily transportable as it weighs just under 7 pounds.

Users have noted that it’s quite loud at its higher settings, so it might be best if you use it in your living room only and not your bedroom.

Capacity and Area Covered

It is intended for spaces up to 85 square feet in size, but it’s surprisingly powerful – its Clean Air Delivery Rate is 110. This means the cleaner should work fine in rooms from 85 to 110 sq ft in size.

Filter Change

How often you need to change the filter depends on how often you run the cleaner and the quality of room air in your home. Generally speaking, you should get a new filter set every six months.

The good news is:

The LV-H132 uses a 3-in-1 filter that only costs around $20-$30 dollars a piece. Talk about low operating costs!

To sum it up,

If you don’t have severe allergies and you want a cleaner that will get rid of dust and bad odors, then the Levoit air purifier is the right choice for you. It comes at a great price, it’s not expensive to operate, and the device is hardly noticeable due to its small size.

Additional features

  • Nightlight with two brightness levels
  • 3-speed fan
  • 2-year warranty with lifetime support

WE LIKE

Works well for removing household odors
Comes with a True HEPA filter
Light and compact
Good price
Low operating costs
Doesn’t use an ionizer
Quiet operation

WE DON’T LIKE

Best used in very small rooms
Not Energy Star Certified
Runs loud at higher speeds

4. PureZone 3-in-1 Air Purifier – Best Budget Air Purifier for Mold

Pure Enrichment’s newest PureZone 3-in-1 air purifier is a model that combines the best that the brand has to offer. It not only filters but also sanitizes the air in the room leaving you with clean, fresh air.

Perfect for mold control as well as general home care, the PureZone air purifier offers it all in a small compact package.

Highlights

  • Good for getting rid of mold spores
  • Suitable for small rooms
  • Quiet operation

Technology and Filters

As the name suggests, this air purifier operates on a 3-in-1 filter technology basis:

  • The first part of the purifier is the washable pre-filter. This part traps larger particles including pet dander and large dust particles.
  • The second layer of filtration is handled by an Activated Carbon filter. This part of the system acts by binding chemical impurities in the air, such as carbon dioxide and carbon monoxide from the smoke. It also binds and filters out chemical elements responsible for house odors including things like sulfur and nitrates.
  • The final filter in this unit is the HEPA filter. This facilitates ultra-filtration that gets rid of up to 99.97% of the particles in the air. This includes everything from pollen to fine dust.
  • Then, the air flows over a UV-C light bulb for sanitization. The light is supposed to kill micro-organisms in the air including bacteria, viruses, mold, and fungal spores.

As mentioned multiple times, UV-C lights may produce ozone in small quantities. This makes these types of units unsuitable for people who are sensitive to air quality. Even if you don’t have issues like this, only run the cleaner in an empty room or turn off the light altogether.

Unit Size

The PureZone 3-in-1 cleaner is pretty small measuring only 10.8” in length by 6.9” in width by 12.1” in height, which makes it easy to move around in your house.

The Whisper Quiet Technology ensures that it makes virtually no sound at all when running on the low-speed setting.

High speeds run pretty loud, which can be disturbing for light sleepers. In this case, the best solution is to run the filter before going to bed so that you can enjoy fresh air and peaceful sleep.

Capacity and Area Covered

According to the manufacturers, the air purifier is suitable for use in rooms up to 200 square feet in size.

In reality, it is not as effective in such large rooms and works best in rooms between 80-100 square feet.

The poor air flow in larger rooms is a result of weakness in the fan. However, you can get the same quality of filtration in such rooms by simply keeping doors and windows shut while running the unit.

Filter Change

The PureZone Carbon filter will give you six months of service and the same applies to the HEPA filter. The filters are not too expensive, but the ongoing costs are above average when compared to other similar units on this list.

That said, the UV-C bulb has 20,000 continuous hours of run time. This means that you will only have to replace it about once every two years.

The problem is that these replacements are hard to come by. The best thing, in this case, is to get them directly from the manufacturer. To be on the safe side, order yours in advance and keep them for a rainy day.

With the thorough filtration system and the UV-C light sanitation, PureZone has a lot to offer. Perfect for mold control, virtually noiseless, and reasonably priced, this purification system is definitely worth considering if you are looking for full value for your money.

Additional Features

  • Touch screen control panel
  • Filter replacement indicator
  • Sleep mode
  • UV-C light on/off switch
  • Automatic timer with 2, 4 or 8-hour runtime
  • 3-speed levels
  • 5-year warranty

WE LIKE

Reasonably priced
Compact size
Uses a True-HEPA filter
Very quiet operation
Longest warranty time in the industry
Energy Star certified

WE DON’T LIKE

Suitable for small rooms only
Emits strong plastic smell in the beginning
Use of UV-C light (can be switched off)
Above average maintenance costs

5. Winix 5500-2 – Best Cleaner for Removing Chemicals

Winix 5500-2 is on our list as the best air purifier for removing chemicals from the air.

It is the second best-performing purifier available* and one of the few specifically designed to deal with potentially harmful vapors and gases in our homes.

*TheSweetHome.com

Highlights

  • Specifically designed to remove harmful gases from the air
  • Low operating costs
  • Unit is large and heavy

Technology and Filters

The Winix 5500-2 comes with a 3-stage air cleaning technology:

  • A charcoal filter eliminates harmful VOCs and smells from smoking, pets, and cooking. It also acts as a pre-filter by catching large particulate matter from the air and helping to extend the life of the HEPA filter.

In case you’re wondering:

VOCs are gases or vapors that are emitted by everyday household items such as paints, glues, disinfectants, etc.

  • The HEPA filter reduces the number of allergens in the air.
  • A special PlasmaWave Technology breaks down smells, chemical vapors, allergens, and other indoor pollutants without producing any ozone.

The PlasmaWave technology is meant to eliminate both chemicals and airborne bacteria and viruses. Although it isn’t supposed to produce any ozone, I wouldn’t let it run overnight.

Furthermore, PlasmaWave alone might not be enough to remove toxins from your home, so if removing these types of pollutants is a priority, I would opt for something like the Winix WAC9500 reviewed below.

Unit Size

This Winix air purifier is quite large and heavy so it might be best to use it in your living room only.

Four available fan speeds let you run it at the intensity you wish and all, except the turbo mode, are running virtually with no noise at all.

Capacity and Area Covered

The device is designed to be used in rooms up to 360 square feet in size. It is CADR rated 243 for dust, 246 for pollen, and 232 for smoke.

For best results, we recommend you use it in a room around 240 sq ft in size.

Filter Change

The HEPA filter needs to be changed once a year and the carbon filter every 3-6 months, depending on usage.

Overall, the Winix 5500-2 home air purifier is an impressive machine, considering it’s the only one out of all reviewed that is specifically designed to remove harmful chemicals from the air. The carbon and HEPA filters also remove allergens and odors, making it one of the most efficient purifiers available.

Additional features

  • Auto dim feature
  • Air quality sensors
  • Auto mode to adjust the speed based on air quality
  • Filter replacement indicator
  • Remote control
  • 1-year warranty

WE LIKE

Good for dust and pollen allergies
Designed to remove chemicals from the air
Washable carbon filter
Powerful
Energy Star Certified
Quiet

WE DON’T LIKE

Larger than other units
Use of PlasmaWave (ionizer)
High operating costs

6. Alen BreatheSmart – Best Customizable Air Purifier

The Alen BreatheSmart HEPA air purifier comes highly recommended and is the best customizable unit available today.

Choose between 4 different types of HEPA-Like filters and 15 panel colors and textures.

Highlights

  • Highly customizable design
  • Choose your own air purification system
  • Doesn’t use real HEPA filters
  • Best used in rooms up to 280 sq ft in size

Technology and Filters

There are four different types of HEPA-like filters available. All of them remove allergens and dust, but each is customized to answer your personal needs.

But before I can move on, you need to know this:

There is a significant difference between HEPA-Type and True HEPA filters.

More information on this can be found in our Buying Guide, but in short, real HEPA filters are certified to clean 99.97% of ultrafine airborne allergens from the air. The filters used in Alen’s air purifier clean only up to 95% of larger dust, pollen, and pet dander particles.

Now:

It may not sound that different to you, but if you’re suffering from severe allergies or asthma, only an air purifier with a REAL HEPA filter can make a difference.

The four filters are:

  • HEPA-Pure – a standard filter, which removes everyday allergens like dust, mold spores, and pollen.
  • HEPA-Silver is perfect if you want to get rid of germs and mold.
  • HEPA-FreshPlus is designed to remove chemicals, smoke, and VOCs.
  • HEPA-OdorCell – an odor neutralizer, which uses special technology to break down diaper and pet odors.

The HEPA-Type filters come with a combination of carbon and pre-filters, depending on the make.

Unit Size

BreatheSmart’s design is one of the things users love most about this premium air purifier. The different colors and textures available for the panels allow you to find the type of machine that fits in with your home décor.

Capacity and Area Covered

The Alen BreatheSmart is the most expensive one reviewed in this article but I’m sure you agree that customizability has a price!

One thing that makes it so expensive though is the area it’s supposedly capable of covering.

This rather small but powerful machine (estimated CADR rating 270-300) is being recommended for use in large and open concept rooms up to 1100 sq ft in size.

However, based on its capacity, it performs best in much smaller rooms – up to 280 sq ft in size.

A powerful machine like this can hardly be quiet. Although the manufacturer describes the noise levels as ‘whisper,’ ‘light rainfall,’ ‘rainfall,’ and ‘box fan on medium,’ users have noted that all available speeds are fairly loud.

Filter Change

No matter which type of HEPA-Like filter your chosen machine uses, it needs to be replaced about once a year. The unit does feature a pre-filter, which is washable and reusable.

All in all, if the design and customizable options are important to you and money is no object, the Alen BreatheSmart air purifier is the best choice. There is currently no other brand that offers this level of customization together with this level of power.

Additional features

  • SmartSensor to adjust to changing air quality
  • Filter change indicator
  • Timer
  • Auto and sleep modes
  • Lifetime limited warranty

WE LIKE

Good for eliminating odors, VOCs, dust and larger particles
Powerful
Highly customizable
15 different panel colors to choose from
Lifetime warranty
Energy Star Certified

WE DON’T LIKE

Suitable for spaces almost four times smaller than recommended by the manufacturer
Doesn’t use a True HEPA filter
High operating costs
Expensive when compared to other purifiers
Runs fairly loud

7. Honeywell True HEPA Allergen Remover – Best Air Purifier for Allergies

We have voted the Honeywell True HEPA Allergen Remover the best air purifier for allergies in our guide.

Users rate it very highly, and most of them agree that their homes are undeniably cleaner and the air better to breathe when using this unit.

Highlights

  • Good for mold, dust, and pollen related allergies
  • Very powerful
  • Works well in large rooms

Technology and Filters

Like most of the purifiers in our list, Honeywell uses a real HEPA filter, which is designed to clean the air from airborne particulate matter. It also uses an activated carbon pre-filter which eliminates smells, though it’s not its strongest suit.

The Allergen Remover uses three HEPA filters, which give it extra purifying power!

Unit Size

Honeywell HPA300 HEPA air purifier is medium sized and has a nice modest design. It weighs 21 pounds, so it may not be the easiest machine to move around your home.

It comes with three different speeds + Turbo clean, and you’ll be happy to know that the lower speed levels run quietly.

Capacity and Area Covered

HPA300 is a very powerful machine as it is CADR rated 300. That’s another reason why it’s so effective in providing clean air and maintaining air quality.

It is recommended to use it in large rooms up to 465 sq ft, but my recommendation is to use it in a room up to 300 square feet in size.

Filter Change

HEPA filters need to be changed about once a year, depending on use. The charcoal filter should be changed every three months for best performance.

Overall, the Honeywell Allergen Remover is a simple but very powerful cleaner designed to remove the most common allergens from the air. Its cleaning power and triple HEPA filter system make it the best buy if you are seeking allergy relief.

There’s one more thing I need to make clear though:

Air cleaners are not magic bullets and will not CURE you of anything. If you suffer from severe allergies, relying on a machine alone will probably not do you any good.

There are quite a few different types of allergies, and there are many things you can do on your own to ensure your home is pollutant free:

Vacuuming, mopping, dusting floors/furniture regularly, and keeping pets outside will go a long way in reducing the allergens from your home.

However, many allergists recommend their patients try air purifiers and see if they work for them. Make sure to wait about 4 to 6 weeks to begin seeing the benefits.

Additional features

  • 2, 4, 8-hour timer
  • Filter replacement reminders
  • 5-year limited warranty

WE LIKE

Good for mold, dust, and pollen allergies
Very powerful
Works well in large rooms
Runs quietly at lower speeds
Energy Star Certified
Ozone free (doesn’t use an ionizer)
Moderate operating costs

WE DON’T LIKE

Doesn’t eliminate odors very well
High-speed levels run loud

8. Winix WAC9500 Ultimate Pet – Best Purifier for Pets

The Winix Ultimate Pet with PlasmaWave technology is voted the best air purifier for pets and pet hair by hundreds of users.

It is the highest rated unit we’ve reviewed in this article.

Highlights

  • Great for removing pet smells and pet hair
  • Best used in small to medium-sized rooms
  • High running costs

Technology and Filters

Winix Ultimate Pet has a 5-stage air cleaning system, making it very effective in eliminating pet hair, odors, and killing germs. It works just as well when it comes to cleaning the air from other household smells and airborne allergens.

Let me tell you a little bit more about the way this Winix model works:

  • The purifying process starts with an antibacterial pre-filter, which collects large particles like pet hair and lint.
  • Next, the air moves through the HEPA filter, which captures dander and other impurities.
  • Then, a shield of silver particles neutralizes bacteria and viruses.
  • The washable charcoal filter traps and neutralizes strong odors
  • The special PlasmaWave technology further neutralizes chemical vapors, odors, viruses, and bacteria in the air.
The PlasmaWave technology creates positive and negative ions to eliminate viruses and bacteria. Although all Winix air purifiers are California ARB Certified, I wouldn’t run this feature overnight.

Unit Size

The Winix 9500 is one of the largest units we’ve reviewed here. It measures 16.5 x 8.9 x 21.9 inches and weighs a little over 24 pounds.

You would think that a large machine like this is very loud, but you’ll be surprised to hear that low to medium levels are barely audible.

Capacity and Area Covered

WAC9500 is CADR rated 182 for dust, 194 for pollen and 183 for tobacco smoke. The manufacturer recommends to use it in a room up to 283 sf in size.

Based on its capacity, it better fits a medium sized room about 180 square feet in size.

Filter Change

The Winix 9500 comes with a washable carbon and pre-filter, which means these can be cleaned and used over and over again. The All-in-One filter cassette should be changed about once a year, although it depends on usage.

In summary,

The Winix Ultimate Pet is not the most powerful cleaner out there, but its 5-stage technology ensures the air gets thoroughly purified from pet hair and dander.

The anti-bacterial pre-filter, Nano Silver shield, and the PlasmaWave technology effectively neutralize germs, bacteria, and viruses.

Additional features

  • Bright and dimmed LED lights
  • Remote control
  • Smart sensors with Auto Mode to measure air quality
  • Filter replacement reminders
  • 1-year limited warranty

WE LIKE

Perfect for getting rid of pet hair and smell
Efficiently kills germs and bacteria
Washable pre-filter
Washable carbon filter
5-stage technology
Energy Start Certified

WE DON’T LIKE

Use of PlasmaWave (ionizer)
High operating costs
Medium power

9. Whirlpool Whispure AP51030K – Best Air Cleaner for Large Rooms

Due to its capacity, Whispure AP51030K is the best air purifier for large rooms in our list.

It is the best known and most popular model from Whirlpool!

Highlights

    • Very powerful
    • Works well in large rooms
    • Higher than average maintenance costs

Technology and Filters

This Whirlpool cleaner is a simple yet effective machine.

It features a 3-stage air filtration system:

  • The outside corpus acts as a pre-filter
  • Carbon covered filter eliminates unwanted smells
  • HEPA filter cleans the air from microscopic particles which can worsen asthma and allergy symptoms

Unit Size

When it comes to size and design, the AP51030K is on the larger and heavier side, making it more suitable for use in one particular room. It does feature built-in handles for better transportation should you wish to move it.

It comes in black and white and though big, it still has a nice modest look.

Capacity and Area Covered

The Whirlpool Whispure is one powerful machine!

What truly stands out from other similar units is the size of the area it’s capable of covering and its clean air delivery rate. The AP51030K is CADR rated 325 for dust, 401 for pollen and 315 for smoke, making it one of the most powerful air cleansers in a very competitive price range.

Keep in mind that these numbers have been achieved by using the top speed, which is very noisy to run long term.

Manufacturer recommended area is 490 sq ft in size, but it is much more effective in a slightly smaller room sized up to 340 square meters.

Out of all cleaners reviewed here, the Whirlpool Whispure is the best air purifier for large rooms!

Filter Change

Whirlpool recommends changing the charcoal filter every 3 months and the HEPA filter once a year.

Although it is safest to use filters produced by the same manufacturer, there are generic filters that cost less than the original, and many users say they work the same. Ultimately, the risk is up to you.

Now to the best part:

Unlike other manufacturers, Whirlpool’s HEPA replacement filter fits many other models as well. This means that filters are widely available and will be for the unforeseeable future!

All in all, although nothing special when it comes to its technology, Whirlpool AP51030K is perfect for you if you need a powerful air purifier for a very large room.

Additional features

  • Sleep mode
  • Filter replacement indicators separate for carbon and HEPA filters
  • 1-year limited warranty

WE LIKE

Perfect for dust, pollen, and mold related allergies
Very powerful
Competitive price
Replacement filters widely available
Capable of covering a very large area
Energy Star Certified

WE DON’T LIKE

Doesn’t especially eliminate heavy odors
High operating costs
Quite large in size
Runs loud at higher speeds

10. Biota Bot MM208 – Best Air Purifier for Removing Cigarette Smoke

The Biota Bot MM208 is one of the newest models of air purifiers on the market and it’s fast becoming a favorite among online shoppers.

It features a unique 7-stage air filtration system and comes with a modern, sleek design – all at a moderate price!

Highlights

  • Powerful 7-in-1 cleaning system
  • Very efficient for removing tobacco smoke
  • High running costs

Technology and Filters

The MM208 is a very powerful 7-in-1 cleaning system. While it may sound too technical, I’m giving you an overview of how it works so you can understand why it is so effective in reducing bad odors.

The unit comes with:

  • A pre-filter to capture large airborne particles and eliminate odors
  • A HEPA filter to catch allergens and other harmful matter from the air
  • An activated charcoal filter to remove common household odors and neutralize harmful chemicals. It is covered with an additional layer of fine granular carbon to increase the absorption of bad smells.
  • A UV sterilizing function to eliminate bacteria and viruses
  • An optional anion feature to further neutralize germs and bacteria
  • An Air Quality Sensor, which will automatically choose the most optimal settings to keep the air clean around you.
The UV light and ionizer function may be a bit of a concern as they can cause breathing problems for sensitive people. If you have small children or elderly people at home, perhaps it’s best to avoid this particular model.

Unit Size

The Biota Bot is a medium-size unit, measuring at 25.6 inches in height. It’s not too heavy either (at under 14 pounds) so it’s easy to move around your home.

It is a very modern-looking unit and can fit any room perfectly. Because it’s barely audible, it is a great addition to your bedroom.

Capacity and Area Covered

Biota Bot’s recommended room size for best performance is up to 430 square feet. However, since no CADR rating has been given, I’d estimate it at around 210 and recommend the purifier for rooms up to 210 sq ft in size.

Filter Change

Biota Bot recommends changing the filters every six to twelve months. The downside is that the replacement pack of three filters costs around $60-$70 dollars, bringing additional costs above average.

That said,

The pre-filter and HEPA filters can be vacuumed and the charcoal filter can be refreshed by placing it in direct sunlight. The ability to clean/refresh your filters increases Biota Bot’s efficiency and can extend the life of the filters.

The Biota Bot MM208 is the best air purifier for removing cigarette smoke as it does a fantastic job at absorbing all the bad smells! It works well in medium to large rooms and its modern look adds a great design element to your home.

Additional features

  • Automatic Air Quality Sensor
  • Sleep mode
  • 1, 2, 4, and 8-hour timer
  • Filter replacement indicator
  • 3-year limited warranty

WE LIKE

7-in-1 cleaning system
Eliminates allergens as well as bad odors
Very efficient for removing cigarette smoke
Works in medium to large rooms

WE DON’T LIKE

High operating costs
Use of UV light and ionizer

11. Honeywell 50250-S – Best Value Air Purifier

The 50250-S is Honeywell’s best-selling model and the best value air purifier in our list.

You will appreciate its durability, low operating costs, and air cleaning ability!

Highlights

  • Cheap to run long-term
  • Powerful
  • Loud on all speeds

Technology and Filters

The Honeywell 50250-S is a very simple machine:

  • It uses an activated carbon pre-filter to capture large particles and reduce common household smells from cooking, smoking, and pets.
  • The HEPA filter cleans the air from airborne allergens and other particulate matter.

Unit Size

The 50250-S is quite large, although not so heavy, which means it can be transported around the house easily if you need to. It features a simple and modest design.

The device comes with three different speeds but is not suitable for use in your sleeping room as it runs loud on all three levels.

Capacity and Area Covered

This Honeywell air purifier has a CADR rating of 250, which is quite high considering its price range. Honeywell recommends to use it in large rooms up to 390 square feet but based on its capacity, it actually works best in a room up to 250 sq ft in size.

Filter Change

This model comes with a long-life HEPA filter and you only need to replace it every 3-5 years. It helps you save a lot of money!

The carbon activated pre-filter lasts for three months. You can vacuum it regularly to extend its life, but if getting rid of smells is important for you, change the charcoal filter as instructed. It will ensure effective odor reduction and will also extend the life of the HEPA filter it covers.

Additional costs are very low, which means the 50250-S is the best value air purifier on the market today.

Honeywell 50250-S is not Energy Star Certified, which means it can use a lot of power if you run it 24/7.
All in all, 50250-S is a great value air purifier as it’s very powerful and helps to eliminate allergens from the air very fast. It’s simple, non-expensive, and cheap to run long-term. It is the best buy for you if you are looking for a powerful unit at a great price.

Additional features

  • Filter replacement indicator
  • 5-year limited warranty

WE LIKE

Good for reducing airborne allergens
Reasonably priced
Low operating costs
Powerful
Works well in large rooms

WE DON’T LIKE

Not Energy Start Certified
Runs loud at all speeds

How to Choose the Best Air Purifier – Buying Guide

Have you noticed that no matter how often you clean your home, there is always some dust lying around?

And what’s even worse:

Invisible allergens like pollen, pet dander, and fumes are very hard to get rid of. If you have allergies or asthma, this can cause a serious problem for you!

While it’s not possible to remove all the particles and allergens from the air, a high-quality, portable air purifier can significantly improve the quality of the air in your home.

Before choosing your cleaner either from the list above or somewhere else, I recommend you read this Buying Guide to know what to look for in the right product.

Technology and Filters

The efficiency of the cleaner will depend on the technology and filter type it uses. Most air purifier brands incorporate all available types into their models in one way or another.

A pre-filter is necessary to capture large particulate matter like dust, lint, and hair which would otherwise reach other filters and reduce their efficiency.

A HEPA filter captures airborne allergens like dust mites, pet dander, and pollen, which are known to cause problems for sensitive people.

Keep in mind:

A HEPA-Type filter is NOT the same as a real HEPA filter. True HEPA filters are proven to trap at least 99.97% of particles as small as 0.3 microns in size. HEPA-Type or HEPA-Like filters capture a smaller percentage of much bigger airborne particulate matter. The use of HEPA-Type/HEPA-Like filters is mainly meant to confuse novice buyers!

Activated carbon filters remove harmful gases and household odors like cooking smells and tobacco smoke from the air.

Some brands incorporate ionic filters, UV lights, or plasma technologies to kill airborne bacteria, viruses and/or eliminate strong odors.

It’s important to know that ionizers are known to produce ozone, which can be harmful in large doses. Keep that in mind, especially if you are prone to asthma.

Some manufacturers use additional methods to get rid of microbes and germs, such as treating filters with anti-bacterial agents or using silver particles.

Efficiency and Capacity

When it comes to technical stuff, the CADR rating is one of the main things to consider.

CADR or the Clean Air Delivery Rate shows you how many cubic feet of air can be filtered in one minute. The value is assigned by the Association of Home Appliance Manufacturers (AHAM) and describes the purifier’s ability to remove dust, pollen or smoke from a specific amount of air.

In short, the higher the CADR, the more powerful the air purifier is and the more air gets purified.

Unit Size and Area Covered

When picking the right device for your home, make sure you consider the size of the room you want to clean and the size of your chosen air cleanser.

Some models are rather large and thus take up a lot more space, while others are designed to be compact and are better suited for smaller rooms.

The manufacturer will list the area the cleaner works best in, but do not rely on the information they provide!

There are two ways you can ensure you get a powerful enough purifier to match your needs:

Choose a model that covers more square footage than the size of your room/flat

OR

Choose a cleaner with a capacity of CADR 1 per 1 square foot.

Choosing a device which covers a larger room means you can run it at a lower (and quieter) setting instead of blasting it at a noisy, full speed.

Secondly, our homes are not air-tight like the laboratories where the equipment is tested in, so new pollutants come in through leaky windows and open doors constantly. A more powerful device will ensure the air is cleaned more efficiently.

Quietness

If you want to run the air cleanser in your bedroom or your office, it’s important to consider the level of noise the device produces. Some models are designed to be quieter than others.

Also, as mentioned above, it is recommended to choose a model with a slightly higher square footage capacity than you need, so you could run the cleaner at a lower and quieter setting throughout the day/night.

Filter change

Besides the cost of your chosen unit, there will be additional costs for electricity and filter replacement.

Depending on how often you use your chosen product, you typically need to replace filters every three to twelve months. The prices for different types of air purifier filters range between $10 to $200, depending on the model.

Picking a unit with a pre-filter could help you extend the life of the HEPA filter as it captures large airborne particles first. Some units come with washable and thus reusable filters.

To reduce recurring costs, make sure your chosen device is Energy Star labeled. These units are energy-efficient, saving you money while reducing greenhouse gas emissions at the same time.

Additional features

When you are doing research on which air purifier to buy, think about what other additional features are important to you. Specifications like shut-off timers, indoor air quality sensors, filter/UV light life indicators and more have been added to many of the newest models.

Frequently Asked Questions

What do air purifiers do?

Air purifiers remove tiny particles, allergens, and harmful chemicals from the air in your home. They can also be useful in eliminating strong smells from pets, cooking, and smoking. These machines move the air through multiple layers of filters and prevent the particles from floating back into the air.

How do air purifiers work?

Air purifiers use different types of technology to clean the air from potentially harmful particles:

  • Pre-filters capture larger particles like hair, dust, and lint
  • Carbon covered filters eliminate pollutants that create odors and gasses
  • HEPA filters trap up to 99.97% of even the tiniest allergens
  • Ionizers eliminate viruses and bacteria by producing ions that latch onto these harmful particles, causing them to become heavy and fall to the ground
  • UV radiation destroys germs, mold, bacteria, and viruses by breaking apart their molecular structure

Depending on your chosen brand and model, an air cleanser can use some or all of these techniques to clean the air.

Who should consider buying an air purifier?

Since indoor air is two to five times more polluted than outdoor air, anyone can benefit from an air cleanser. That is especially true if you live in a large city or live/work nearby busy roads where clean air is hard to come by.

Air purifiers can be very useful for people who suffer from asthma or allergies caused by airborne allergens. Air cleaning machines with HEPA filters are very efficient in eliminating these types of irritants.

It’s important to understand that air purifiers will not cure you of your allergies or asthma. The best way to keep your home pollutant free is by dusting/vacuuming/mopping often. That said, a cleaner can help ease your symptoms and is definitely worth a try.

Are air purifiers worth it?

Considering the cost of these devices and the time required to maintain them, it’s only natural to wonder whether air purifiers are really worth it.

The truth is, it really depends on your needs:

  • If you’re someone who is not sensitive to air quality and you’ve lived your whole life without any issues, you’re probably fine without it.
  • If you’re someone who suffers from allergies caused by dust mites (non-airborne allergens), you’re better off with hypoallergenic sheets and a regular dusting/vacuuming routine.

Then again:

If airborne allergens are an issue for you, an air purifier can help ease the symptoms. You shouldn’t rely on them completely, but they can definitely make a difference in the air you breathe.

Additionally, air purifiers can be very efficient in eliminating bad odors and cooking smells, keeping your home clean and removing harmful chemicals if that’s something you’re worried about.

Which air purifier is the best?

It’s not easy to answer this question as it depends on your needs:

  • Do you need something that helps to ease the symptoms of asthma and allergies? The best air purifier for you will come with a True-HEPA filter.
  • Do you want to eliminate bad smells? The best model is something that comes with a high-quality filter covered with activated carbon.
  • Are you or someone from your family often sick? A purifier with an ionizer or UV-C light will help eliminate airborne bacteria and viruses.
  • Do just need to reduce the amount of dust lying around? A cheap and/or basic cleaner might be right for you.

Are air purifiers safe?

Some air purifiers can produce trace amounts of ozone (the same component found in urban smog), which is considered to be a lung irritant and can actually worsen the symptoms of asthma or other respiratory diseases.

Elderly people, young babies, and pets can also be sensitive to ozone. If this is something that worries you, choose an air purifier without an ionizer/plasma wave technology or one that has an off-switch for this function.

Alternatively, check out this list by California Air Resources Board. It lists all cleaners that have been tested for ozone emissions and certified to produce ozone in no or extremely low quantities.

Finally

‘Is an air purifier worth it?’

‘Does it help with allergies?’

‘What are the Top 5 purifiers for allergies?’

These are just some of the frequently asked questions I saw people ask when doing research for this guide.

I want to stress that no matter the brand, air purifiers are not magical devices. If you are sensitive to air quality, you can’t rely on just a machine to keep your home pollutant free. However, even doctors agree that they are definitely worth a try.

About the author

Karmen is a freelance writer from Tartu, Estonia whose second passion is health and nutrition.

She is currently working as a Virtual Assistant providing services to different marketing companies.

Best Air Purifier 2018 – Buyer’s Guide
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